Error(s):

(21:26) Invalid token '(' in class, struct, or interface member declaration
(21:35) ; expected
(23:30) Invalid token '(' in class, struct, or interface member declaration
(23:32) Invalid token ')' in class, struct, or interface member declaration
(25:9) A namespace cannot directly contain members such as fields or methods
(31:23) Expected class, delegate, enum, interface, or struct
(31:40) Identifier expected
(31:42) Expected class, delegate, enum, interface, or struct
(33:25) Expected class, delegate, enum, interface, or struct
(36:26) Expected class, delegate, enum, interface, or struct
(40:5) Type or namespace definition, or end-of-file expected
(41:1) Type or namespace definition, or end-of-file expected